I am connecting the 2 pairs of XLR output of a BAT VK-50SE to a Theta Dreadnaught to biamp a pair of Martin Logan SL3. You can also use a XLR to RCA adapter with it. You don't have to limit youself with only SE preamp. The VK-50SE does not have a HT bypass but it can preset any input to fixed unity gain. That is what I use to connect a processor's two front channels.